Sensibilidade a fungicidas de isolados de corynespora cassiicola provenientes do Estado de Goiás.

O fungo Corynespora cassiicola, agente causal da mancha-alvo em soja, pode, sob condições de alta temperatura e alta umidade, causar sérios danos à cultura. No Brasil, não se tem condições suficientes para um manejo adequado dessa doença, principalmente pela escassez de fungicidas foliares registrados e cultivares resistentes. Este trabalho foi realizado visando avaliar a sensibilidade in vitro de seis isolados de C. cassiicola oriundos do Estado de Goiás, aos fungicidas boscalida, carbendazim, ciproconazol, fluopyram, fluxapiroxade, protioconazol e tiofanato-metílico, utilizados nas concentrações de 0; 0,01; 0,1; 1; 10 e 100 ug mL-1 de ingrediente ativo (i.a.). Os fungicidas fluxapiroxade e fluopyram proporcionaram as maiores inibições de crescimento micelial (ICM) do patógeno in vitro, apresentando as menores doses efetivas capaz de inibir o crescimento micelial em 50% (DE50). O fungicida tiofanato-metílico foi incapaz de inibir o crescimento micelial do fungo nas concentrações avaliadas

Photoelectron angular distribution studies for two spin\u2013orbit-split components of Xe 3d subshell: a critical comparison between theory and experiment

The photoelectron angular distribution asymmetry parameters \u3b2 of the Xe 3d subshell were investigated using an x-ray free-electron laser (XFEL) at photon energies of 750 and 800 eV. Owing to the perfect polarization of the XFEL and two-dimensional momentum imaging capability of our velocity map imaging spectrometer, we determined the \u3b2 values with high accuracy. The \u3b2 values were also investigated based on relativistic time-dependent density functional theory calculations of up to 900 eV of photon energies. By comparing all the available experimental results including our data with the most reliable theories on the photon energy dependence of the \u3b2 parameters, serious differences are noted between the experiments and theories. Further studies on resolving this difference will provide new insight into the photoionization processes of the deep inner shells

A search for non-random cosmic-ray time series by a cluster analysis

Non-random time series of cosmic rays were searched for in air shower data of mean energy 1:1 x 1015 eV, collected by the air shower array atMitsuishi, Japan, during the period from January 1989 to October 1996. By clustering the arrival time of air showers, five occasions of rate elevation phenomena were found with an expected probability 0:05 (varying from 0:18 x 1

Field-Aligned Low-Energy O^+ Flux Enhancements in the Inner Magnetosphere Observed by Arase

The present study examines the low-energy ion flux variations observed by the Arase satellite in the inner magnetosphere. From the magnetic field and ion flux data obtained by the fluxgate magnetometer and the low-energy particle experiments–ion mass analyzer onboard Arase, we find 55 events of the low-energy O^+ flux enhancement accompanied with magnetic field dipolarization in the periods of April 1–October 31, 2017 and July 1, 2018–January 31, 2019. The low-energy O^+ flux enhancements (a) start a few minutes after the dipolarization onset, (b) have energy-dispersed signatures with decreasing energy from a few keV down to ∼10 eV, (c) are observed in both storm and non-storm periods, (d) have a field-aligned distribution (α ∼ 0° in the southern hemisphere and α ∼ 180° in the northern hemisphere), (e) are accompanied by the low-energy H^+ flux enhancements that have lower energies than O^+ by a factor of 3–10, and (f) increase the O^+ density and the O^+/H^+ density ratio by ∼10 times and 4–5 times, respectively. We perform a numerical simulation to trace ion trajectories forward in time from the Arase positions. It is revealed that both H^+ and O^+ ions drift eastward and reach the dawn-to-morning sector without being lost in the ionosphere, if the pitch angle scattering effect is considered near the equatorial plane. This result suggests that these low-energy field-aligned ions can contribute to formation of the warm plasma cloak.journal articl

Study of Two-Proton States of the 20Ne Nucleus by (3He, n) Reaction

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